the advantages of DOL starter:-This is a protection device.
When motor takes large current from supply, then trip to
suplly.& safe from burn out.
When single phasing occures in the system then become
trip to sypply.by O.L.c.(over load coil).
main advantages of dol starter are
1.cost is less(star delta starter contains 3 contactors,a timer dol
contains a contactor only).
2.protection(it contains over current protection devices.star delta
starter also contains this)
3.less space is required
but it is used only for small motors like power less than 7.5,10Hp
hi frienda We have 250kva cater pillet dg set we are fasing
one diffrent proublam in dg we are start dg set after one
mint applying load around 450a load but dg was run 3 Or 4
mints after 3 mints dg was shuding down automatic how to
face this proublam pls tel any budy
While connecting the flood light plug on to the 415 V
distribution panel,there was spark and the cable got burnt.
Three ignitors of the flood light also burnt of. The lamps
are of 400 W (total 6 lamps) connected through 1.5 mm2
cable. The plug was immediately removed from the circuit.
There was a 30 mA RCD connected and a 250 A MCCB; however
both did not trip. What could be the possible reasons for
the circuit devices not to trip?Can someone assist please.
Additional info if needed can be provided.